noun
globe amaranth
A plant with clover-like flower heads that retain color when dried; common in gardens and dried flower arrangements.
庭に千日草を植えた。
I planted globe amaranth in the garden.
千日草のドライフラワーは色が長持ちする。
Dried globe amaranth flowers retain their color for a long time.
From 千日 (sen'nichi, 'thousand days') + 草 (sō, 'grass, plant'), referring to the long-lasting color of the dried flowers.